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Net Web Api Developer Jobs in Addison, IL (NOW HIRING)

QT9 Software, Inc.

.NET Developer - QMS

Aurora, IL

$70K - $105K/yr

NET applications using C#, ASP.NET MVC/Web Forms, Web API, and SQL Server * Collaborate with project managers and senior developers to understand project requirements and priorities * Write clean ...

CAI

Senior Web Developer

Chicago, IL · Hybrid

Utilize tools such as SOAP UI and Postman for API development, testing, and validation * Translate business requirements into technical solutions that align with established development standards

Hi-Tech Solutions

.NET Developer

Chicago, IL

$49.75 - $65.75/hr

Net. Strong development skills in the Microsoft environment, including T-SQL, C#, Dot-Net, MS SQL ... Web-services, API's, Restful services. Strong systems analysis and design skills. Strong ...

Spar Information Systems

.Net React Developer/Lead

Lisle, IL · On-site

$114K - $143K/yr

NET Core Experience in writing extensive unit tests and Web API testing. Good Understanding of ... Good understanding of object-oriented programming (OOP) principles. Understanding of the GitFlow ...

Sonsoft Inc

.Net Developer

Chicago, IL · On-site

$49.75 - $65.75/hr

Should have Experience in RESTful services and Web API * Should possess very good knowledge on Entity Framework 4 and LINQ * Should have good knowledge on MVC 4 and onward versions * Exposure to ...

Sonsoft Inc

.Net Developer

Chicago, IL · On-site

$49.75 - $65.75/hr

Should have Experience in RESTful services and Web API * Should possess very good knowledge on Entity Framework 4 and LINQ * Should have good knowledge on MVC 4 and onward versions * Exposure to ...

International Motors, LLC

Lead .Net Developer

Lisle, IL · On-site

$112K - $168K/yr

Net Developer to contribute to our Commercial Sales Experience (CSE) product initiative. The ideal ... Writing extensive unit tests and Web API testing * Responsible for security, performance, and ...

Sonsoft Inc

.Net Developer

Chicago, IL · On-site

$49.75 - $65.75/hr

Should have Experience in RESTful services and Web API * Should possess very good knowledge on Entity Framework 4 and LINQ * Should have good knowledge on MVC 4 and onward versions * Exposure to ...

Sonsoft Inc

ASP Dot Net Developer

Chicago, IL · On-site

$49.75 - $65.75/hr

Should have Experience in RESTful services and Web API * Should possess very good knowledge on Entity Framework 4 and LINQ * Should have good knowledge on MVC 4 and onward versions * Exposure to ...

Crossway

Web Developer (Django)

Wheaton, IL · On-site

$70K - $90K/yr

Web Developer (Django) Reports To: Director of Web Development General Description of ... Related services and API development * Web infrastructure maintenance * Other duties as assigned ...

krg technology inc

Android Developer

Chicago, IL · On-site

$57.50 - $75.50/hr

... Web API, WCF, LINQ Understanding of Object-Oriented programming Familiarity with unit testing and mocking concepts and frameworks Experience using ALM tools such as TFS (Team Foundation Server) or ...

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All JobsNet Web Api Developer JobsNet Web Api Developer Jobs in Addison, IL

Net Web Api Developer information

See Addison, IL salary details

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How much do net web api developer jobs pay per hour?

As of Aug 10, 2026, the average hourly pay for net web api developer in Addison, IL is $53.83, according to ZipRecruiter salary data. Most workers in this role earn between $46.49 and $61.39 per hour, depending on experience, location, and employer.

What is a .NET Web API developer?

A .NET Web API Developer is a software engineer who specializes in building and maintaining web APIs using Microsoft's .NET framework. These APIs enable different software systems to communicate over the web, often supporting front-end applications or mobile apps. The developer is responsible for designing, developing, testing, and deploying RESTful services that are secure, efficient, and scalable. They often work with technologies like C#, ASP.NET Core, and Entity Framework, and are skilled in integrating various data sources and services.

What are the key skills and qualifications needed to thrive as a .NET Web API developer?

To thrive as a .NET Web API Developer, you need solid programming skills in C#, experience with ASP.NET Core, and a good understanding of RESTful API design, typically supported by a degree in computer science or related field. Familiarity with development tools such as Visual Studio, version control systems like Git, and knowledge of cloud platforms (e.g., Azure) or certifications in .NET technologies are highly beneficial. Strong problem-solving abilities, effective communication, and the ability to work collaboratively make a developer stand out in this role. These skills ensure the creation of robust, scalable, and maintainable web services that meet business and user needs.

What is the difference between Net Web Api Developer vs ASP.NET Developer?

AspectNet Web Api DeveloperASP.NET Developer
Primary FocusDesigning and developing Web APIs for data exchangeBuilding web applications using ASP.NET framework
Required SkillsWeb API, C#, .NET, REST, JSONASP.NET, C#, MVC, Razor, Web Forms
Work EnvironmentBackend API development, server-side logicFull-stack or web application development
Common UsageCreating services for mobile apps, integrationsDeveloping enterprise web applications

While both roles involve .NET technologies, a Net Web Api Developer specializes in creating APIs for data exchange, whereas an ASP.NET Developer focuses on building complete web applications using ASP.NET frameworks. The roles often overlap but differ mainly in scope and primary responsibilities.

What are the most common challenges a .NET Web API developer faces when integrating APIs with front-end applications?

One of the most common challenges .NET Web API Developers encounter is ensuring seamless communication between the back-end APIs and diverse front-end frameworks. Issues such as handling CORS, authentication, consistent data formatting, and version control can arise during integration. Developers also need to coordinate closely with front-end teams to clarify API specifications and troubleshoot integration bugs. Proactive documentation, regular communication, and thorough testing are essential strategies to overcome these challenges, ensuring a smoother development workflow.
What job categories do people searching Net Web Api Developer jobs in Addison, IL look for? The top searched job categories for Net Web Api Developer jobs in Addison, IL are:
What cities near Addison, IL are hiring for Net Web Api Developer jobs? Cities near Addison, IL with the most Net Web Api Developer job openings:
Net Web Api Developer jobs near you

.NET Developer - QMS

QT9 Software, Inc.

Aurora, IL

$70K - $105K/yr

Full-time

Re-posted 3 days ago

Job description

Description:

About the Company

QT9 Software builds the quality and operations platform purpose-built for regulated manufacturers. Our QMS is trusted by 1,200+ companies across medical devices, pharmaceuticals, aerospace, food & beverage, and other regulated industries to manage compliance, documentation, and audit readiness. Our ERP brings those same companies a fully integrated operations platform — inventory, production, purchasing, and traceability — built to work natively with the quality system, not alongside it as an afterthought.


We are the only platform that gives a regulated manufacturer a complete, pre-validated quality and operations solution without the enterprise price tag or the 18-month implementation. Our customers don't just use us — they rely on us when the auditor walks in the door.


Advantages of working at QT9 Software

  • Strong culture where people are our most valuable asset.
  • Prime location near Chicago Premium Outlets.
  • Modern industrial warehouse built in 2019 with 24 ft. ceilings.
  • Cool amenities from Golf Simulator, Sport Court and Arcade games.
  • Growing team with a small company feel.
  • Provide you with the support you need to succeed in your role.
  • Competitive compensation package with great benefits.


Job Description

QT9 Software is seeking an experienced .NET Developer for our QMS team. In this role, you will design, develop, and maintain complex .NET applications. Working closely with project managers and senior developers, you will deliver high-quality software solutions that meet business requirements.


To be considered, candidates must have .NET experience and a strong background in C#, ASP.NET MVC/Web Forms, Web API, and SQL Server. This position is full-time and onsite in Aurora, IL. We will be relocating to Batavia, IL early 2027.


Job Responsibilities

  • Design, develop, and maintain .NET applications using C#, ASP.NET MVC/Web Forms, Web API, and SQL Server
  • Collaborate with project managers and senior developers to understand project requirements and priorities
  • Write clean, maintainable code following best practices and coding standards
  • Perform unit testing and debugging to ensure software quality and reliability
Requirements:
  • Bachelor’s degree in computer science, Engineering, or related field.
  • 1+ years of professional development experience.
  • Proficiency in C#, ASP.NET MVC/WEB FORMS, and SQL Server.
  • Strong understanding of object-oriented programming principles.
  • Excellent problem-solving and analytical skills.
  • Ability to work effectively in a fast-paced environment.


#ZR

Company Description

At QT9 Software, we build cloud-based SaaS and on-premise QMS and ERP solutions that help companies in regulated industries simplify compliance, improve quality, and operate more efficiently. Our platform replaces spreadsheets and disconnected systems with a single, scalable platform used by 1,200+ organizations worldwide.

Founded in 2005, we have grown from a startup into a globally trusted software company while maintaining a collaborative, product focused culture. We design intuitive, configurable solutions that teams can implement quickly and adopt at scale.

At QT9, your work has real impact. You will be trusted to own your work. Your ideas will be heard, and your contributions will directly shape the platform and customer experience. Whether you are building features, supporting customers, or improving internal processes, you will see the results of your work in real time.

We are a growing, engaged team that values collaboration, accountability, and continuous improvement. Our environment is team oriented, where people take pride in their work and hold a high standard for performance.

Headquartered in Aurora, Illinois (moving to downtown Batavia in 2027), QT9 offers the opportunity to grow your career while making a tangible difference.